Function customErrorMessage

customErrorMessage(promise: Promise<any>, message: string): Promise<any>
Attach a custom error message if a promise fails. If the promise succeeds, this function does nothing.
Parameters
- promise: Promise<any>
  The promise to wait for.
- message: string
  Custom message to attach to the error;
Returns Promise<any>
Example
```
const page = newPage(config);
await page.goto('https://example.org/');
await customErrorMessage(
    page.waitForSelector('blink'), '<blink> element not found (BUG-123)');
await closePage(page);
```
- Defined in promise_utils.js:35